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Automobile finish paint and preparation method thereof

A technology for automotive topcoats and coatings, applied in the field of automotive topcoats and their preparations, can solve the problems of non-densification, poor mechanical properties, soft resin, etc., and achieve the effect of excellent antifouling and excellent thermal conductivity

Active Publication Date: 2022-03-22
清远华湾材料研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The resin used in existing self-healing coatings is soft, not dense, has poor mechanical properties and is not wear-resistant
In addition, the healing and repairing ability of the paint film formed by this type of paint is limited, and it has a one-time repairing effect on the same scratch position, and the repairing performance on the second scratch is not good

Method used

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  • Automobile finish paint and preparation method thereof
  • Automobile finish paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The present embodiment provides a kind of automobile finish paint and preparation method thereof, wherein, the automobile finish paint comprises the component of following parts by weight: 20 parts of polyurethane acrylate resins, 20 parts of epoxy acrylate resins, 5 parts of chitosan , 8 parts of polychlorotrifluoroethylene / vinyl ether resin, 2 parts of hydrophobically modified nano-silicon dioxide, 9 parts of nano-silicon carbide, 0.5 parts by weight of dispersant propylene oxide butyl ether, defoamer polyether modified silicone 0.1 parts by weight, leveling agent polyether polyester modified organosiloxane 0.2 parts by weight, anti-settling agent 0.5 parts by weight, barite powder filler 3 parts by weight.

[0031] The preparation method of above-mentioned automobile finish coating, comprises the steps:

[0032] S1: Preparation of hydrophobically modified nano-silica: Stir nano-silica and 0.1mol / L NaOH solution at room temperature for 50 minutes, filter out the lye a...

Embodiment 2

[0035] The present embodiment provides a kind of automobile finish paint, and the difference with embodiment 1 only is that the composition of paint is different, and present embodiment automobile finish paint comprises the component of following parts by weight:

[0036] 18 parts of polyurethane acrylate resin, 12 parts of epoxy acrylate resin, 3 parts of chitosan, 15 parts of polyvinyl fluoride resin, 3 parts of hydrophobically modified nano-silica, 7 parts of nano-silicon carbide, dispersant propylene oxide benzene 0.2 parts by weight of base ether, 0.5 parts by weight of polyether modified silicone as antifoaming agent, 0.1 part by weight of polyether polyester modified organosiloxane as leveling agent, 0.5 parts by weight of anti-settling agent, and 5 parts by weight of pigment and filler.

Embodiment 3

[0038] The present embodiment provides a kind of automobile finish paint, and the difference with embodiment 1 only is that the composition of paint is different, and present embodiment automobile paint finish comprises the component of following parts by weight:

[0039] 18 parts of polyurethane acrylate resin, 6 parts of epoxy acrylate resin, 3 parts of chitosan, 12 parts of polyvinyl fluoride resin, 4 parts of hydrophobically modified nano-silica, 4 parts of nano-silicon carbide, dispersant cyclopolyglycidol 0.5 parts by weight of ether, 0.1 parts by weight of polyether modified silicone as antifoaming agent, 0.1 part by weight of polyether polyester modified organosiloxane as leveling agent, 0.3 parts by weight of anti-settling agent, and 4 parts by weight of pigments and fillers.

[0040] Refer to the method specified in GB / T1743-89 to detect the self-healing repair performance of the coatings in Examples 1-3, and use the gloss retention rate and scratch repair time after ...

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Abstract

The invention belongs to the technical field of automobile coatings, and particularly relates to an automobile finish coating and a preparation method thereof. The automobile finish paint is prepared from the following components in parts by weight: 24 to 50 parts of acrylic resin, 3 to 5 parts of chitosan, 8 to 16 parts of fluorocarbon resin, 2 to 5 parts of hydrophobic modified nano silicon dioxide and 4 to 9 parts of nano silicon carbide. The acrylic resin and the chitosan are compounded, the chitosan and the acrylic resin can be quickly cross-linked to form a net-shaped structure during curing and film forming, and a formed paint film has self-healing capacity after being scratched; meanwhile, the fluorocarbon resin and the hydrophobic modified nano silicon dioxide are compounded to achieve the optimal wear-resistant effect; the nano silicon carbide has excellent heat-conducting property, so that the finish paint film can be self-healed to repair scratches under the condition of natural light, and the comprehensive performance is excellent.

Description

technical field [0001] The invention belongs to the technical field of automobile coatings, and in particular relates to an automobile topcoat and a preparation method thereof. Background technique [0002] The self-healing coating of the car topcoat can make the car body encounter scratches or slight collisions, and the small scratches can be automatically eliminated in a short period of time, or eliminated under natural light conditions, so as to effectively protect the car paint. [0003] The resins used in existing self-healing coatings are soft, not compact, have poor mechanical properties and are not wear-resistant. In addition, the healing and repairing ability of the paint film formed by the existing paint of this type is limited, and it has a one-time repairing effect on the same scratch position, and has poor repairing performance on secondary scratches. Contents of the invention [0004] Aiming at the problems existing in the prior art, the present invention ai...

Claims

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Application Information

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IPC IPC(8): C09D175/14C09D163/10C09D105/08C09D127/12C09D127/14C09D7/61C09D7/62C09D7/65
CPCC09D175/14C09D163/10C09D7/61C09D7/62C09D7/65C08K2201/011C08L63/10C08L5/08C08L27/12C08K9/06C08K9/02C08K3/36C08K3/34C08L75/14C08L27/14
Inventor 郭逍遥汤汉良卢承大雷斯敏刘凯郭伟杰刘其平赖浩城
Owner 清远华湾材料研究院有限公司
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